CVE-2021-29508

CRITICAL

Asynkron Wire - Insecure Deserialization

Title source: rule

Description

Due to how Wire handles type information in its serialization format, malicious payloads can be passed to a deserializer. e.g. using a surrogate on the sender end, an attacker can pass information about a different type for the receiving end. And by doing so allowing the serializer to create any type on the deserializing end. This is the same issue that exists for .NET BinaryFormatter https://docs.microsoft.com/en-us/visualstudio/code-quality/ca2300?view=vs-2019. This also applies to the fork of Wire.

Scores

CVSS v3 9.1
EPSS 0.0045
EPSS Percentile 63.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Classification

CWE
CWE-502
Status published

Affected Products (2)

asynkron/wire
nuget/Wire NuGet

Timeline

Published May 11, 2021
Tracked Since Feb 18, 2026